From mboxrd@z Thu Jan 1 00:00:00 1970 From: AKASHI Takahiro Date: Tue, 14 Jan 2020 16:33:32 +0900 Subject: [PATCH v4 6/6] test: add rsa_verify() unit test In-Reply-To: References: <20191121001121.21854-1-takahiro.akashi@linaro.org> <20191121001121.21854-7-takahiro.akashi@linaro.org> Message-ID: <20200114073331.GE28530@linaro.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wed, Jan 08, 2020 at 06:43:51PM +0100, Heinrich Schuchardt wrote: > > > On 11/21/19 1:11 AM, AKASHI Takahiro wrote: > >In this patch, a very simple test is added to verify that rsa_verify() > >using rsa_verify_with_pkey() work correctly. > > > >To keep the code simple, all the test data, either public key and > >verified binary data, are embedded in the source. > > > >Signed-off-by: AKASHI Takahiro > >--- > > test/Kconfig | 12 +++ > > test/lib/Makefile | 1 + > > test/lib/rsa.c | 206 ++++++++++++++++++++++++++++++++++++++++++++++ > > 3 files changed, 219 insertions(+) > > create mode 100644 test/lib/rsa.c > > > >diff --git a/test/Kconfig b/test/Kconfig > >index cb7954041eda..64d76c3b20a5 100644 > >--- a/test/Kconfig > >+++ b/test/Kconfig > >@@ -28,6 +28,18 @@ config UT_LIB_ASN1 > > Enables a test which exercises asn1 compiler and decoder function > > via various parsers. > > > >+config UT_LIB_RSA > >+ bool "Unit test for rsa_verify() function" > >+ imply RSA > >+ imply ASYMMETRIC_KEY_TYPE > >+ imply ASYMMETRIC_PUBLIC_KEY_SUBTYPE > >+ imply RSA_PUBLIC_KEY_PARSER > >+ imply RSA_VERIFY_WITH_PKEY > > This test should depend on RSA_VERIFY_WITH_PKEY because is cannot be > executed otherwise. See below. > Best regards > > Heinrich > > >+ default y > >+ help > >+ Enables rsa_verify() test, currently rsa_verify_with_pkey only() > >+ only, at the 'ut lib' command. > >+ > > endif > > > > config UT_TIME > >diff --git a/test/lib/Makefile b/test/lib/Makefile > >index 72d2ec74b5f4..2bf6ef3935bb 100644 > >--- a/test/lib/Makefile > >+++ b/test/lib/Makefile > >@@ -8,3 +8,4 @@ obj-y += lmb.o > > obj-y += string.o > > obj-$(CONFIG_ERRNO_STR) += test_errno_str.o > > obj-$(CONFIG_UT_LIB_ASN1) += asn1.o > >+obj-$(CONFIG_UT_LIB_RSA) += rsa.o > >diff --git a/test/lib/rsa.c b/test/lib/rsa.c > >new file mode 100644 > >index 000000000000..44f8ade226f4 > >--- /dev/null > >+++ b/test/lib/rsa.c > >@@ -0,0 +1,206 @@ > >+// SPDX-License-Identifier: GPL-2.0+ > >+/* > >+ * Copyright (c) 2019 Linaro Limited > >+ * Author: AKASHI Takahiro > >+ * > >+ * Unit test for rsa_verify() function > >+ */ > >+ > >+#include > >+#include > >+#include > >+#include > >+#include > >+#include > >+#include > >+ > >+#ifdef CONFIG_RSA_VERIFY_WITH_PKEY > > Please, remove this ifdef. Simply do not build this module if > CONFIG_RSA_VERIFY_WITH_PKEY is not defined. That is why I added this #ifdef here to avoid a build error. I think it is a good idea to make test code as generic as possible to easily add more test cases. I believe that the original RSA helper functions (w/o WITH_PKEY) should also be exercised in a unit test. Otherwise, the code will only be exercised indirectly through FIT image verification and such a situation will contradict what Tom (or Heinrich?) demanded against my RSA patch. -Takahiro Akashi > >+/* > >+ * openssl genrsa 2048 -out private.pem > >+ * openssl rsa -in private.pem -pubout -outform der -out public.der > >+ * dd if=public.der of=public.raw bs=24 skip=1 > >+ */ > >+static unsigned char public_key[] = { > >+ 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xca, 0x25, 0x23, > >+ 0xe0, 0x0a, 0x4d, 0x8f, 0x56, 0xfc, 0xc9, 0x06, 0x4c, 0xcc, 0x94, 0x43, > >+ 0xe0, 0x56, 0x44, 0x6e, 0x37, 0x54, 0x87, 0x12, 0x84, 0xf9, 0x07, 0x4f, > >+ 0xe4, 0x23, 0x40, 0xc3, 0x43, 0x84, 0x37, 0x86, 0xd3, 0x9d, 0x95, 0x1c, > >+ 0xe4, 0x8a, 0x66, 0x02, 0x09, 0xe2, 0x3d, 0xce, 0x2c, 0xc6, 0x02, 0x6a, > >+ 0xd4, 0x65, 0x61, 0xff, 0x85, 0x6f, 0x88, 0x63, 0xba, 0x31, 0x62, 0x1e, > >+ 0xb7, 0x95, 0xe9, 0x08, 0x3c, 0xe9, 0x35, 0xde, 0xfd, 0x65, 0x92, 0xb8, > >+ 0x9e, 0x71, 0xa4, 0xcd, 0x47, 0xfd, 0x04, 0x26, 0xb9, 0x78, 0xbf, 0x05, > >+ 0x0d, 0xfc, 0x00, 0x84, 0x08, 0xfc, 0xc4, 0x4b, 0xea, 0xf5, 0x97, 0x68, > >+ 0x0d, 0x97, 0xd7, 0xff, 0x4f, 0x92, 0x82, 0xd7, 0xbb, 0xef, 0xb7, 0x67, > >+ 0x8e, 0x72, 0x54, 0xe8, 0xc5, 0x9e, 0xfd, 0xd8, 0x38, 0xe9, 0xbe, 0x19, > >+ 0x37, 0x5b, 0x36, 0x8b, 0xbf, 0x49, 0xa1, 0x59, 0x3a, 0x9d, 0xad, 0x92, > >+ 0x08, 0x0b, 0xe3, 0xa4, 0xa4, 0x7d, 0xd3, 0x70, 0xc0, 0xb8, 0xfb, 0xc7, > >+ 0xda, 0xd3, 0x19, 0x86, 0x37, 0x9a, 0xcd, 0xab, 0x30, 0x96, 0xab, 0xa4, > >+ 0xa2, 0x31, 0xa0, 0x38, 0xfb, 0xbf, 0x85, 0xd3, 0x24, 0x39, 0xed, 0xbf, > >+ 0xe1, 0x31, 0xed, 0x6c, 0x39, 0xc1, 0xe5, 0x05, 0x2e, 0x12, 0x30, 0x36, > >+ 0x73, 0x5d, 0x62, 0xf3, 0x82, 0xaf, 0x38, 0xc8, 0xca, 0xfa, 0xa1, 0x99, > >+ 0x57, 0x3c, 0xe1, 0xc1, 0x7b, 0x05, 0x0b, 0xcc, 0x2e, 0xa9, 0x10, 0xc8, > >+ 0x68, 0xbd, 0x27, 0xb6, 0x19, 0x9c, 0xd2, 0xad, 0xb3, 0x1f, 0xca, 0x35, > >+ 0x6e, 0x84, 0x23, 0xa1, 0xe9, 0xa4, 0x4c, 0xab, 0x19, 0x09, 0x79, 0x6e, > >+ 0x3c, 0x7b, 0x74, 0xfc, 0x33, 0x05, 0xcf, 0xa4, 0x2e, 0xeb, 0x55, 0x60, > >+ 0x05, 0xc7, 0xcf, 0x3f, 0x92, 0xac, 0x2d, 0x69, 0x0b, 0x19, 0x16, 0x79, > >+ 0x75, 0x02, 0x03, 0x01, 0x00, 0x01 > >+}; > >+ > >+static unsigned int public_key_len = 270; > >+ > >+/* > >+ * dd if=/dev/urandom of=data.raw bs=512 count=1 > >+ */ > >+static unsigned char data_raw[] = { > >+ 0x3e, 0x48, 0x6e, 0xef, 0x83, 0xd1, 0x4c, 0xfd, 0x92, 0x47, 0x92, 0xd7, > >+ 0xf6, 0x16, 0x25, 0x0a, 0xdf, 0xe2, 0xb6, 0x6c, 0xe7, 0xe0, 0x55, 0xb2, > >+ 0x70, 0x66, 0xf0, 0xe5, 0xdc, 0xaf, 0xd3, 0x2e, 0xc1, 0x3e, 0x5c, 0x4b, > >+ 0xb5, 0xa7, 0x23, 0x1f, 0x2c, 0xce, 0xf8, 0x83, 0x00, 0x6d, 0xeb, 0xdd, > >+ 0x19, 0x71, 0x13, 0xb4, 0xae, 0x5c, 0xa8, 0xae, 0x52, 0xc8, 0xe1, 0x77, > >+ 0x9e, 0x98, 0x75, 0xbc, 0xef, 0x36, 0x9f, 0x0c, 0x14, 0xed, 0x1a, 0x0a, > >+ 0x4f, 0x6c, 0xa4, 0xb1, 0xbb, 0x0e, 0x43, 0x93, 0x12, 0xfc, 0x2e, 0x82, > >+ 0x93, 0x4e, 0xcb, 0xa2, 0xcd, 0x59, 0x3f, 0xc5, 0x11, 0x38, 0x3a, 0x88, > >+ 0xc3, 0xcf, 0xf9, 0x61, 0xa8, 0x9e, 0x96, 0xb6, 0xbf, 0xa6, 0x5b, 0x0d, > >+ 0xd9, 0xbd, 0x05, 0x4c, 0xbe, 0xed, 0x86, 0xca, 0x10, 0x63, 0x72, 0x75, > >+ 0x4b, 0xbd, 0x86, 0x42, 0x30, 0x9d, 0x54, 0x4e, 0x12, 0xda, 0xf4, 0xb4, > >+ 0xfd, 0xd9, 0x54, 0x95, 0x8f, 0x83, 0xc2, 0x63, 0x44, 0xdd, 0x96, 0x1a, > >+ 0xd0, 0x7c, 0xcf, 0xcb, 0x16, 0xd6, 0xff, 0xa3, 0xbb, 0xeb, 0x24, 0x06, > >+ 0xbf, 0x81, 0xd0, 0x29, 0x76, 0x19, 0x66, 0x84, 0xfc, 0x49, 0xde, 0x7b, > >+ 0x5d, 0xd2, 0x27, 0x58, 0x21, 0x7b, 0xff, 0x4d, 0x64, 0xf3, 0x89, 0xe3, > >+ 0xea, 0xb6, 0x54, 0x4e, 0xb1, 0x62, 0x52, 0x89, 0xe3, 0x22, 0xf2, 0x26, > >+ 0x3e, 0x4f, 0x43, 0x58, 0x78, 0x91, 0x55, 0xbc, 0x1e, 0xd6, 0x97, 0xfc, > >+ 0x0b, 0x85, 0x4c, 0x92, 0x9c, 0xbf, 0xc4, 0xb1, 0x62, 0x93, 0x27, 0xa9, > >+ 0xb2, 0xf4, 0xb4, 0x7a, 0xfb, 0x56, 0xe5, 0x8f, 0xe1, 0x94, 0x4d, 0xfd, > >+ 0xe4, 0x72, 0x8d, 0xa9, 0x71, 0x65, 0xcb, 0x2e, 0x6d, 0x39, 0xd5, 0x95, > >+ 0xe7, 0x3f, 0xab, 0xaa, 0x7a, 0x74, 0x84, 0x25, 0x4b, 0x42, 0x1e, 0xd3, > >+ 0x86, 0xca, 0x47, 0x4a, 0xf0, 0x24, 0x81, 0x24, 0xb0, 0xe1, 0xbb, 0x6c, > >+ 0x3f, 0x2a, 0xa0, 0xb8, 0xeb, 0xd6, 0x01, 0xce, 0x63, 0x51, 0xe1, 0x81, > >+ 0xd2, 0x32, 0x43, 0x56, 0x44, 0x4a, 0x6b, 0x51, 0x24, 0xa2, 0xc7, 0x39, > >+ 0x7c, 0x54, 0xda, 0xf8, 0xd4, 0x93, 0x7c, 0x8e, 0x4e, 0x9d, 0x15, 0x08, > >+ 0xce, 0x27, 0xd8, 0x28, 0xb0, 0x5b, 0x75, 0x32, 0x43, 0xe8, 0xd6, 0xbf, > >+ 0x12, 0xd5, 0xc5, 0x12, 0x8e, 0xeb, 0x77, 0x8f, 0x00, 0xde, 0x45, 0x1e, > >+ 0xdd, 0xf3, 0xef, 0x43, 0x99, 0x79, 0x86, 0xea, 0x01, 0xce, 0xf2, 0x4d, > >+ 0xa0, 0xfe, 0x5a, 0x55, 0xc0, 0x1f, 0xce, 0xe8, 0xbe, 0xc2, 0x66, 0xdb, > >+ 0xcb, 0x3f, 0xa5, 0x48, 0xa1, 0xe2, 0x49, 0xa1, 0x29, 0x65, 0x5b, 0x62, > >+ 0x39, 0xcc, 0xef, 0xbe, 0x86, 0xb7, 0xe3, 0x44, 0x67, 0x04, 0x04, 0xb1, > >+ 0xec, 0xd8, 0xb2, 0xb2, 0x38, 0xbc, 0x10, 0xea, 0x7a, 0x0e, 0xa4, 0xa4, > >+ 0xcb, 0x21, 0xd9, 0xc7, 0xb4, 0x0b, 0xb8, 0x39, 0xb4, 0x07, 0x53, 0x3f, > >+ 0xb9, 0x55, 0x55, 0xa1, 0x6f, 0x11, 0x49, 0xc0, 0x94, 0x77, 0xaf, 0x76, > >+ 0x97, 0x7f, 0x31, 0x08, 0xdd, 0x72, 0x48, 0x72, 0xf8, 0x11, 0x4f, 0x69, > >+ 0x10, 0xef, 0x23, 0x06, 0xf3, 0x34, 0xac, 0xee, 0x97, 0x89, 0x41, 0x1c, > >+ 0x36, 0x38, 0xb1, 0x80, 0x96, 0x7a, 0x9e, 0x72, 0xab, 0x25, 0xeb, 0xce, > >+ 0x7b, 0xb8, 0x5d, 0xc8, 0xef, 0xa4, 0x73, 0xa1, 0xa6, 0x8f, 0x01, 0x54, > >+ 0xce, 0x58, 0x19, 0xe5, 0x7e, 0xfa, 0x77, 0x08, 0x9d, 0x53, 0xc1, 0xcc, > >+ 0x08, 0xe8, 0x1d, 0xe0, 0x82, 0x5e, 0xe1, 0xe6, 0xbd, 0xbb, 0x59, 0x7e, > >+ 0x12, 0x9c, 0x39, 0x60, 0x23, 0xf7, 0xbe, 0x0a, 0x7c, 0x48, 0x12, 0xa0, > >+ 0x84, 0x04, 0x3f, 0xa1, 0x6e, 0x92, 0xcd, 0xa0, 0xac, 0xee, 0x0b, 0xbc, > >+ 0x18, 0x30, 0x28, 0xbd, 0xf5, 0xfa, 0x3a, 0x35 > >+}; > >+ > >+static unsigned int data_raw_len = 512; > >+ > >+/* > >+ * openssl dgst -sha256 -sign private.key -out data.enc data.raw > >+ */ > >+unsigned char data_enc[] = { > >+ 0xa7, 0x4a, 0x12, 0x8f, 0xee, 0x65, 0x4b, 0xcd, 0x88, 0xca, 0x4d, 0xed, > >+ 0xe3, 0x04, 0xe7, 0x7c, 0x59, 0xbf, 0x2f, 0xad, 0x95, 0x73, 0x5b, 0x2c, > >+ 0x4e, 0xb5, 0xda, 0x5e, 0x3a, 0x6d, 0xb4, 0xc5, 0x84, 0x0c, 0xd2, 0x4a, > >+ 0x62, 0x0d, 0x5f, 0xba, 0x10, 0xee, 0xb1, 0x2a, 0xe1, 0xfe, 0x50, 0x18, > >+ 0x97, 0xcc, 0xea, 0x26, 0x62, 0x33, 0x5a, 0x1d, 0x51, 0x38, 0x52, 0x89, > >+ 0x4d, 0xa7, 0x18, 0xff, 0xa6, 0xc8, 0xd4, 0x7a, 0xc0, 0xa6, 0x22, 0xdf, > >+ 0x41, 0x89, 0x93, 0x9b, 0xe7, 0x9e, 0xc1, 0xc8, 0x80, 0xda, 0x1a, 0x3f, > >+ 0xa4, 0x7a, 0xd0, 0x07, 0xcb, 0x5c, 0xa4, 0x75, 0x12, 0x54, 0x78, 0x67, > >+ 0xbf, 0xe6, 0xae, 0x1e, 0x56, 0x33, 0x9e, 0xe0, 0x6e, 0x33, 0xa7, 0x58, > >+ 0xb0, 0x47, 0x49, 0xa8, 0x37, 0xdb, 0x82, 0x4b, 0xbd, 0x32, 0x9c, 0xdc, > >+ 0xf4, 0x67, 0x17, 0x24, 0x55, 0xfd, 0x83, 0x1e, 0xc8, 0xb4, 0x5c, 0xf9, > >+ 0x15, 0x6c, 0x5e, 0xaa, 0x72, 0x03, 0x9e, 0x7c, 0x17, 0xf5, 0x7c, 0x37, > >+ 0x96, 0x00, 0xb0, 0xd8, 0xaa, 0x05, 0xfa, 0xaa, 0xa1, 0x78, 0x77, 0xd5, > >+ 0x09, 0xdd, 0x05, 0xc7, 0xe2, 0x9f, 0x68, 0xc7, 0xf8, 0xfb, 0x0b, 0x6f, > >+ 0x18, 0x1e, 0xcc, 0x93, 0xd3, 0x3f, 0xc9, 0x26, 0x29, 0x64, 0xe7, 0x15, > >+ 0xdc, 0xb8, 0x19, 0x10, 0x24, 0x55, 0x55, 0x3b, 0x79, 0xa1, 0x65, 0x12, > >+ 0xe0, 0x0b, 0x88, 0x44, 0x4c, 0xea, 0x85, 0x5a, 0x6b, 0x2d, 0x45, 0x6e, > >+ 0xe7, 0x83, 0x6f, 0x3a, 0xaa, 0x1e, 0xf1, 0x9c, 0x8f, 0xdc, 0xb9, 0x37, > >+ 0xa2, 0x15, 0x61, 0x93, 0x06, 0x23, 0xf5, 0xfe, 0xf0, 0xf8, 0x2b, 0xf7, > >+ 0xc0, 0x68, 0x67, 0xf6, 0x4e, 0x08, 0x0d, 0x0d, 0x08, 0xbe, 0xfb, 0x2c, > >+ 0x4c, 0xe7, 0xd7, 0x1a, 0xad, 0xd9, 0x98, 0xa1, 0x8d, 0x94, 0x1c, 0xd1, > >+ 0x89, 0x06, 0xc9, 0x3a > >+}; > >+ > >+static unsigned int data_enc_len = 256; > >+ > >+/** > >+ * lib_rsa_verify_valid() - unit test for rsa_verify() > >+ * > >+ * Test rsa_verify() with valid hash > >+ * > >+ * @uts: unit test state > >+ * Return: 0 = success, 1 = failure > >+ */ > >+static int lib_rsa_verify_valid(struct unit_test_state *uts) > >+{ > >+ struct image_sign_info info; > >+ struct image_region reg; > >+ int ret; > >+ > >+ memset(&info, '\0', sizeof(info)); > >+ info.name = "sha256,rsa2048"; > >+ info.padding = image_get_padding_algo("pkcs-1.5"); > >+ info.checksum = image_get_checksum_algo("sha256,rsa2048"); > >+ info.crypto = image_get_crypto_algo(info.name); > >+ > >+ info.key = public_key; > >+ info.keylen = public_key_len; > >+ > >+ reg.data = data_raw; > >+ reg.size = data_raw_len; > >+ ret = rsa_verify(&info, ®, 1, data_enc, data_enc_len); > >+ ut_assertf(ret == 0, "verification unexpectedly failed (%d)\n", ret); > >+ > >+ return CMD_RET_SUCCESS; > >+} > >+ > >+LIB_TEST(lib_rsa_verify_valid, 0); > >+ > >+/** > >+ * lib_rsa_verify_invalid() - unit test for rsa_verify() > >+ * > >+ * Test rsa_verify() with invalid hash > >+ * > >+ * @uts: unit test state > >+ * Return: 0 = success, 1 = failure > >+ */ > >+static int lib_rsa_verify_invalid(struct unit_test_state *uts) > >+{ > >+ struct image_sign_info info; > >+ struct image_region reg; > >+ unsigned char ctmp; > >+ int ret; > >+ > >+ memset(&info, '\0', sizeof(info)); > >+ info.name = "sha256,rsa2048"; > >+ info.padding = image_get_padding_algo("pkcs-1.5"); > >+ info.checksum = image_get_checksum_algo("sha256,rsa2048"); > >+ info.crypto = image_get_crypto_algo(info.name); > >+ > >+ info.key = public_key; > >+ info.keylen = public_key_len; > >+ > >+ /* randomly corrupt enc'ed data */ > >+ ctmp = data_enc[data_enc_len - 10]; > >+ data_enc[data_enc_len - 10] = 0x12; > >+ > >+ reg.data = data_raw; > >+ reg.size = data_raw_len; > >+ ret = rsa_verify(&info, ®, 1, data_enc, data_enc_len); > >+ > >+ /* revert a change */ > >+ data_enc[data_enc_len - 10] = ctmp; > >+ > >+ ut_assertf(ret != 0, "verification unexpectedly succeeded\n"); > >+ > >+ return CMD_RET_SUCCESS; > >+} > >+ > >+LIB_TEST(lib_rsa_verify_invalid, 0); > >+#endif /* RSA_VERIFY_WITH_PKEY */ > >